Risks of Avian Influenza Transmission in Areas of Intensive Free-Ranging Duck Production with Wild Waterfowl. - Cappelle, Julien; Zhao, Delong; Gilbert, Marius; Nelson, Martha; Newman, Scott; Takekawa, John; Gaidet, Nicolas; Prosser, Diann; Liu, Ying; Li, Peng; Shu, Yuelong; Xiao, Xiangming (EcoHealth, 2014)